1-93
Thermistor Source
Value:
None
[0]
Analog input 53
[1]
Analog input 54
[2]
Digital input 18
[3]
Digital input 19
[4]
Digital input 32
[5]
Digital input 33
[6]
Function:
Select the input to which the thermistor (PTC
sensor) should be connected. An analog input
option [1] or [2] cannot be selected if the an-
alog input is already in use as a reference
source (selected in par. 3-15
Reference
Source
1, 3-16
Reference Source
2 or 3-17
Reference Source 3).
This parameter cannot be adjusted while the
motor is running.
2-00
DC Hold Current/Preheat
Current
Value:
0 - 100%
50 %
Function:
Enter a value for holding current as a percent-
age of the rated motor current I
M,N
set in par.
1-24 Motor Current. 100 % DC holding current
corresponds to I
M,N
.
This parameter holds the motor function
(holding torque) or pre-heats the motor.
This parameter is active if
DC hold
is selected
in par. 1-80
Function at Stop
.
NOTE
The maximum value depends on
the rated motor current.
NOTE
Avoid 100% current for too
long, as it may damage the mo-
tor.
2-10
Brake Function
Value:
Off
[0]
Resistor brake
[1]
Function:
Select
Off
[0] if no brake resistor is installed.
Select
Resistor brake
[1] if a brake resistor is
incorporated in the system, for dissipation of
surplus brake energy as heat. Connecting a
brake resistor allows a higher DC link voltage
during braking (generating operation). The
resistor brake function is only active in adjust-
able frequency drives with an integral dynam-
ic brake.
VLT
®
HVAC Drive Instruction Manual
6. How to program the adjustable frequency
drive
MG.11.A4.22 - VLT
®
is a registered Danfoss trademark
81
6